Plotter 2D using turtle

plotter.py

import turtle
import time
t = time.time_ns
turtle_ = turtle.Turtle()
turtle_.penup()
turtle_.hideturtle()
turtle.speed('fastest')
turtle.tracer(0, 0)
height = 500*2
current_time = t()
while t()-3_000_000_000 < current_time: turtle.update()

def point(x, y):
    turtle_.goto(x, y)
    turtle_.pendown()
    turtle_.showturtle()
    turtle_.stamp()
    turtle_.hideturtle()
    turtle_.penup()

def plot(function, start, stop, step):
    if color is not None:
        turtle.color(color)
        turtle.pencolor(color)
    rang_ = stop-start
    value = start
    while value <= stop:
        try:
            point((value-start)/rang_*height-height/2, function(value)/rang_*height)
        except Exception as e:
            print(value, e)
        value+=step
        print(f'{value} done for function {function.__name__}')
    print(f'function {function.__name__} done')
    turtle.update()

def plots(functions, start, stop, step, color=None):
    for function in functions:
        plot(function, start, stop, step)

from math import sin, cos, tan
plots([sin, cos], 0, 6.28, 0.001) # change this

turtle.done()